﻿//    Copyright 2014 LuoZhihui
//    Licensed under the Apache License, Version 2.0 (the "License");
//    you may not use this file except in compliance with the License.
//    You may obtain a copy of the License at
//      http://www.apache.org/licenses/LICENSE-2.0
//    Unless required by applicable law or agreed to in writing, software
//    distributed under the License is distributed on an "AS IS" BASIS,
//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//    See the License for the specific language governing permissions and
//    limitations under the License.

#region  导入名称空间

using System.Collections.Generic;

#endregion

namespace LotteryEngine.Infrastructure.Querying
{
	public class Query
	{
		private readonly IList<Criterion> _criteria = new List<Criterion>();
		private readonly IList<Query> _subQueries = new List<Query>();

		public IEnumerable<Criterion> Criteria
		{
			get { return _criteria; }
		}

		public IEnumerable<Query> SubQueries
		{
			get { return _subQueries; }
		}

		public QueryOperator QueryOperator { get; set; }

		public OrderByClause OrderByProperty { get; set; }

		public void AddSubQuery(Query subQuery)
		{
			_subQueries.Add(subQuery);
		}

		public void Add(Criterion criterion)
		{
			_criteria.Add(criterion);
		}
	}
}